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Nondiffuse fatty infiltration of the liver: does the uptake of iron-oxide increase or decrease at SPIO-enhanced MR
Hideko Onoda1, Katsuyoshi Ito, Masahiro Tanabe
1Department of Radiology, Yamaguchi University School of Medicine, 1-1-1 Minamikogushi, Ube, Yamaguchi 755-8505, Japan.
European Journal of Radiology
|May 20, 2011
Summary
Superparamagnetic iron oxide (SPIO) uptake generally decreases in fatty liver areas. However, advanced cirrhosis can reverse this, showing increased SPIO uptake in fatty liver due to surrounding tissue changes.
Area of Science:
- Magnetic Resonance Imaging
- Hepatology
- Radiology
Background:
- Fatty infiltration of the liver is a common condition.
- Superparamagnetic iron oxide (SPIO) enhanced MRI is used for liver imaging.
- Understanding SPIO uptake in fatty liver is crucial for accurate diagnosis.
Purpose of the Study:
- To determine if SPIO uptake changes in fatty liver areas compared to non-fatty areas.
- To investigate the impact of cirrhosis on SPIO uptake in fatty liver disease.
Main Methods:
- Retrospective analysis of 14 patients with fatty liver and 30 controls.
- SPIO-enhanced MRI was performed on all patients.
- Signal intensity and signal intensity loss in fatty vs. non-fatty areas were compared.
Main Results:
- In 7/14 patients without advanced cirrhosis, SPIO uptake decreased in fatty areas (lower signal intensity loss).
- In 7/14 patients with advanced cirrhosis, SPIO uptake increased in fatty areas (higher signal intensity loss).
- Cirrhosis significantly impacted SPIO uptake patterns in fatty liver.
Conclusions:
- SPIO uptake typically decreases in fatty liver areas.
- Advanced cirrhosis alters SPIO uptake, potentially due to fibrosis in surrounding non-fatty liver tissue.
- SPIO-enhanced MRI findings in fatty liver vary with the presence and severity of cirrhosis.
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